System.Touched.Procedure

Documentation

data Procedure a b

A process defined by three values: exec - the "process" type kill - takes a launched process and stops it fork - takes an exec and launches it into the background

Constructors

Procedure

Fields

fork :: a -> IO b

kill :: b -> IO ()

exec :: a

Instances

Show (Procedure a b)

type AsyncIO = Procedure (IO ()) ThreadId

A type synonym for a Haskell native process.

async :: IO () -> AsyncIO

A "smart constructor" for Haskell native processes

type CmdHandles = (Maybe Handle, Maybe Handle, Maybe Handle, ProcessHandle)

A type synonym for the tuple returned by createProcess Corresponds to stdin, stdout, stderr, and a PID

procId :: CmdHandles -> ProcessHandle

Fetches the PID from a CmdHandles tuple.

type AsyncCmd = Procedure CreateProcess CmdHandles

A type synonym for shell commands in the Process module

cmd :: String -> AsyncCmd

A smart constructor for shell processes. Takes a string to launch in the shell and returns the process